Form of gate valve

ABSTRACT

This invention consists of a cylindrical body having a tubular inlet and outlet extending outward from the longitudinal center thereof, the aforesaid inlet and outlet being diametrically opposite to one another; and a gate in the form of a curved plate being located in the said cylindrical body the curved plate having a spring guide ring at each end thereof; and at right angle to the plate each guide ring being split or cut, thereby providing the rings with two ends and crossbar having one end connected to each ring. There are two crossbars in parallel spaced relation to one another, the ends of the crossbars being connected to the ends of the rings and at right angle to the rings and directly under the aforesaid curved plate; and an Lshaped lever, having an inverted U-shaped clip, integrally formed at one end, the clip being adapted to encompass in part a portion of the two crossbars. The L-shaped lever is connected to a valve shaft that extends through the center of an end plate of the aforesaid cylindrical body, the valve shaft having a hand lever secured to the outer end thereof, for the purpose of opening or closing the valve.

United States Patent [72] Inventor Oren E. mu"

8126 North Hudson St., Portland, Oreg. 97203 2| Appl. No 855,683

[22] Filed SepL 5, I969 [45] Patented July 6, 1971 [54] FORM OF GATEVALVE Primary ExaminerHarold W Weakley ABSTRACT: This invention consistsof a cylindrical body having a tubular inlet and outlet extendingoutward from the longitudinal center thereof, the aforesaid inlet andoutlet being diametrically opposite to one another; and a gate in theform of a curved plate being located in the said cylindrical body thecurved plate having a spring guide ring at each end thereof; and atright angle to the plate each guide ring being split or cut therebyproviding the rings with two ends and crossbar having one end connectedto each ring. There are two crossbars in parallel spaced relation to oneanother, the ends of the crossbar: being connected to the ends of therings and at right angle to the rings and directly under the aforesaidcurved plate; and an L-shaped lever, having an inverted U-shaped clip,integrally formed at one end, the clip being adapted to encompass inpart a portion of the two crossbars. The L- ahaped lever is connected toa valve shaft that extends through the center of an end plate of theaforesaid cylindrical body, the valve shaft having a hand lever securedto the outer end thereof, for the purpose of opening or closing thevalve.

PATENTEHJUL sum 3.591.135

SHEET 1 0F 2 INVENTOR OREN E. MILLER PATENTEB JUL 6 IHYI SHEET 2 (IF 2l/jl/l/l/J FIG. 4

FIG 3 INVENTOR OREN E. MILLER FORM OF GATE VALVE This invention relatesto valves; more particularly, to a gate valve, still more particularly,to an improved form of gate valve. The valve can also be called a rotaryvalve, although I personally call it a Miller-type valve.

It is the principal object of this invention to provide an improved fonnof gate valve that has a spring-loaded gate released by internalpressure that is applied by an externally located handle.

Another object of this invention is to provide an improved form of gatevalve that is self-seating as well as self-cleaning by reason of itsnovel construction.

Another object of this invention is to provide an improved form of gatevalve that can be rebored on an ordinary lathe by nearly any machinist.

Still another object of this invention is to provide an improved form ofgate valve that has a minimum number of parts, (none of which arecomplicated in configuration), that require a minimum amount ofmaintenance which can be given by nearly any mechanically inclinedperson.

Other objects and advantages of this invention will appear hereinafieras the reading of this specification and its an pended claims proceedsand the accompanying drawings are examined.

In the drawings:

FIG. 1 is a pictorial view of this invention.

FIG. 2 is a pictorial exploded view of this invention showing its majorparts in order of assembly.

FIG. 3 is a sectional view of this invention, taken substantially alongline 3-3 of FIG. 4, and viewed in the direction indicated by the arrows.

FIG. 4 is a sectional view of this invention, taken substantially alongline 4-4 of FIG. 3, and viewed in the direction indicated by the arrows.

In the several views of the drawings, like parts of this invention areindicated by like reference numbers. The reference number 7 indicatesthis invention in its entirety.

Directing ones attention to FIG. 2 of the accompanying drawings it willbe seen that this invention 7 consists of a cylindrical body 8 having aninlet 9 and an outlet 10 in the longitudinal center thereof. Theaforesaid inlet and outlet are located diametrically opposite from oneanother and are in the form of outwardly extending tubes that are atright angle to the aforesaid body 8 with which the tubes are eitherintegrally formed or welded thereto. An end plate I] is bolted, screwed,or otherwise fastened to the peripheral flange 12 that is made part ofone end of the aforesaid cylindrical body 8 which has a similarperipheral flange 13 on the other end of the body, as one can see bylooking at FIGS. 1, 2, and 4 of the drawings. A second end plate 14 issuitably secured to this last-mentioned peripheral flange when thevarious parts of this invention are assembled.

Continuing to look at the drawings it will be seen that a curved plateof the same length as the inside of the aforesaid body 8 is located inthe body. The curved plate is actually the gate 15 of this invention.Looking at FIG. 2 of the drawings it will be seen that the aforesaidgate 15 has a spring guide ring 16 at each end thereof and at rightangle to the aforesaid curved plate. The guide rings 16 are split or cutat 17, thereby providing the rings with two ends. A crossbar 18 has oneend connected or otherwise secured to each guide ring 16 while an alikecrossbar 19, that is parallel to crossbar 18, is likewise connected orotherwise fastened to the other end of each guide ring 16. This novelconstruction is clearly shown in FIGS. 2 and J of the accompanyingdrawings. l-Iere, FIG. 3 shows that an inverted U-shaped clip 20encompasses a portion of each crossbar 18 and 19, the clip 20 being apart of the upper end of an L-shaped release lever 21 that is connectedto the inner end of the valve shaft 22 which extends through the centerof the hub 23 of the second end plate 14. This part of the invention isbest illustrated in FIG. 2 of the drawings. It is also seen here thatthe outer end of the aforesaid valve shaft 22 is threaded to receive thenut 24 when the hand lever 25 is placed on the end of the shaft. Theaforesaid valve shaft 22 is provided with a plurality of spaced O-rings26 in order to prevent leakage of whatever fluid passes through thevalve from leaking past the shah.

The way in which this invention works will be fully understood by thoseexperienced in the art upon their examination of FIGS. 3 and 4 of theaccompanying drawings. However, for those who are not so experienced,attention is focused on FIG. 3 where it can be seen that when theaforesaid hand lever 25 is rotated in either direction, the lever willexert force on one of the aforesaid crossbars 18 or 19 and cause the barto be drawn towards the other crossbar, thereby releasing the externalpressure of the two spring guide rings 16 and thus permitting the gate15 to be rotated in the cylindrical body 8 and either open or close theinlet or outlet of the valve.

It is to be realized that the aforesaid hand lever 25 can be located ateither end of the valve. The valve can be made of any desired material,such as metal tiberglas, plastic or any other material, or the valve canbe made of a combination of any two or more materials. The valve can beproduced in any desired size and can be provided with a number ofoutlets, thereby converting it into a distributing valve, if it is sodesired. The body of the valve can be made from a casting or fabricatedfrom a number of separately made parts and then welded or otherwisesecured together. This valve can be used anywhere valves are needed andcan be made to handle any fluid no matter what its composition may be.

This novel valve I have invented is subject to any and all changes indetail design and/or modifications fllat one may care to make in thesame in so long as the changes and/or modifications fall within thescope and intent of the appended claims.

What I now claim as new and desire to secure by Letters Patent is:

1. An improved form of gate valve of the character described, comprisinga cylindrical body having an inlet and an outlet, the said inlet andoutlet are outwardly extending tubes diametrically opposed to oneanother and located in the longitudinal center of the said body, and agate in the form of a curved plate, the said curved plate of the saidgate embodies a spring guide ring at each end thereof, the rings beingat right angle to the said curved plate and each said ring being splitor cut and each end of each ring being connected or otherwise secured toa crossbar located underneath the said curved plate, the two crossbarsbeing parallel to one another, the curved plate is rotated by mechanismconnected to a hand lever located on the outside of one end of the saidcylindrical body.

2. The invention of claim 1, wherein the said mechanism consists of anL-shaped lever located inside the said cylindrical body and under thesaid curved plate, the said lever having an inverted U-shaped clipintegrally formed on one end thereof, the said U-shaped clip beingadapted to encompass in part a portion of the two crossbars, therebycausing the two spring guide rings to be contracted and flius permittingthe said gate to be rotated when the said hand lever is moved; and thesaid hand lever being suitably secured to the outer end of the saidvalve shaft.

3. The invention of claim 2, wherein the cylindrical body has a solidend plate removably secured to one end thereof; and a second end platelikewise secured to the other end of the said cylindrical body and thesecond-mentioned end plate being provided with a hub in the centerthereof through which is rotatably located the said valve shaft.

4. The invention of claim 3, wherein the said hand lever is secured tothe said valve shaft by means of a nut screwed onto the outer end of thesaid valve shaft which is provided with threads adapted to receive thesaid nut and the said valve shaft being provided with a plurality ofspaced O-rings that prevent any liquid in the said valve from leakingout the end of the said valve.

1. An improved form of gate valve of the character described, comprisinga cylindrical body having an inlet and an outlet, the said inlet andoutlet are outwardly extending tubes diametrically opposed to oneanother and located in the longitudinal center of the said body, and agate in the form of a curved plate, the said curved plate of the saidgate embodies a spring guide ring at each end thereoF, the rings beingat right angle to the said curved plate and each said ring being splitor cut and each end of each ring being connected or otherwise secured toa crossbar located underneath the said curved plate, the two crossbarsbeing parallel to one another, the curved plate is rotated by mechanismconnected to a hand lever located on the outside of one end of the saidcylindrical body.
 2. The invention of claim 1, wherein the saidmechanism consists of an L-shaped lever located inside the saidcylindrical body and under the said curved plate, the said lever havingan inverted U-shaped clip integrally formed on one end thereof, the saidU-shaped clip being adapted to encompass in part a portion of the twocrossbars, thereby causing the two spring guide rings to be contractedand thus permitting the said gate to be rotated when the said hand leveris moved; and the said hand lever being suitably secured to the outerend of the said valve shaft.
 3. The invention of claim 2, wherein thecylindrical body has a solid end plate removably secured to one endthereof; and a second end plate likewise secured to the other end of thesaid cylindrical body and the second-mentioned end plate being providedwith a hub in the center thereof through which is rotatably located thesaid valve shaft.
 4. The invention of claim 3, wherein the said handlever is secured to the said valve shaft by means of a nut screwed ontothe outer end of the said valve shaft which is provided with threadsadapted to receive the said nut and the said valve shaft being providedwith a plurality of spaced O-rings that prevent any liquid in the saidvalve from leaking out the end of the said valve.